Big Al's Services
Big Al's Services is a HVAC provider serving Merrimack, NH. Rated 5.0★ with 804 Google reviews. See services, review signals, and request a quote.
HVACMerrimack, NH
On this page
Company overview
- TradeHVAC
- Service areaMerrimack, NH
- Google rating5.0★ (804 reviews)
- Phone(603) 453-0533
- Address22 Danville Rd, Plaistow, NH 03865, USA
Photos
Photos from Big Al's Services
What customers say
“I had a rusty old oil tank with a minor leak. I called several companies for a replacement, but no one could fit me into their schedule. Big Al asked for a few photos of the tank, provided a competiti…”
“It was time to replace my 30 year old beast of a boiler, so I started the process of getting some quotes. After discussing boiler options and pricing with 7 different companies, I decided on Big Al’s …”
“Big Al really came through for us with our new Boiler, who we have named Bumblebee!🐝 After listening to our 1989 dinosaur of a boiler for all these years, (RIP Ole Blue!) it is so nice and comfort…”
“We're in the middle of a nor'easter with a bomb cyclone and blizzard-like conditions. I wake to find it's 55 in my house. First phone call finds my usual go-to who installed the system and does my rep…”
Key highlights
Strengths
- Highly rated (5.0★ average)
- Large review volume (804 reviews)
Things to ask
- Confirm availability for your area and timeline
- Ask about warranty terms on parts and labor
- Request a written estimate before work begins
- Ask about payment plans or financing
Explore nearby research
Frequently Asked Questions
What services does Big Al's Services offer?
Big Al's Services provides: HVAC diagnosis, repairs, and full system installs. They serve residential and commercial customers in Merrimack, NH.
What is Big Al's Services's rating?
Big Al's Services has a 5.0 out of 5 star rating based on 804 Google reviews.
Is this company licensed in New Hampshire?
All listed providers have a verified New Hampshire contractor license at time of publication. You can verify on the New Hampshire Mechanical Licensing Board — State Fire Marshal's Office (gas fitters only; no statewide HVAC contractor license) — NEEDS-VERIFY lookup at https://www.nh.gov/safety/divisions/firesafety/licensing/mechanical-licensing.html.
Does Big Al's Services offer emergency service?
Contact them directly to ask about emergency availability and after-hours service.
How do I request a quote?
Use the CTA below to submit your ZIP. You can message this company alongside two or three other local pros for easy comparison.
Licensing verified 2026-04-23. Reviews refreshed 2026-04-23.
Licensing data: New Hampshire Mechanical Licensing Board — State Fire Marshal's Office (gas fitters only; no statewide HVAC contractor license) — NEEDS-VERIFY · Company data: verified business records + Google Business profile
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